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Finding the Fourth Proportional to 555,958.36, 767,216.94 and 310,940.54

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Solution

The fourth proportional to 555,958.36, 767,216.94 and 310,940.54 is: 429,094.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,958.36 : 767,216.94 = 310,940.54 : x
  2. Step 2: Convert to fraction form
    555,958.36/767,216.94 = 310,940.54/x
  3. Step 3: Cross multiply
    555,958.36x = 767,216.94 × 310,940.54
  4. Step 4: Simplify right side
    555,958.36x = 238,558,849,620.75
  5. Step 5: Solve for x
    x = 238,558,849,620.75/555,958.36
  6. Step 6: Final answer
    x = 429,094.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.